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/*
* XMPP event queue
*
* Copyright (c) 2007-2009 by Art Cancro
*
* This program is open source software; you can redistribute it and/or modify
* it under the terms of the GNU General Public License version 3.
*
*
*
* This program is distributed in the hope that it will be useful,
* but WITHOUT ANY WARRANTY; without even the implied warranty of
* MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the
* GNU General Public License for more details.
*
*
*
*
*
*/
#include "sysdep.h"
#include <stdlib.h>
#include <unistd.h>
#include <stdio.h>
#include <fcntl.h>
#include <signal.h>
#include <pwd.h>
#include <errno.h>
#include <sys/types.h>
#if TIME_WITH_SYS_TIME
# include <sys/time.h>
# include <time.h>
#else
# if HAVE_SYS_TIME_H
# include <sys/time.h>
# else
# include <time.h>
# endif
#endif
#include <sys/wait.h>
#include <string.h>
#include <limits.h>
#include <ctype.h>
#include <expat.h>
#include <libcitadel.h>
#include "citadel.h"
#include "server.h"
#include "citserver.h"
#include "support.h"
#include "config.h"
#include "internet_addressing.h"
#include "md5.h"
#include "ctdl_module.h"
#include "serv_xmpp.h"
int queue_event_seq = 0;
void xmpp_queue_event(int event_type, char *email_addr) {
struct xmpp_event *xptr = NULL;
struct xmpp_event *new_event = NULL;
struct xmpp_event *last = NULL;
int purged_something = 0;
struct CitContext *cptr;
MARK_syslog(LOG_DEBUG, "xmpp_queue_event(%d, %s)\n", event_type, email_addr);
/* Purge events more than a minute old */
begin_critical_section(S_XMPP_QUEUE);
do {
purged_something = 0;
if (xmpp_queue != NULL) {
if ((time(NULL) - xmpp_queue->event_time) > 60) {
xptr = xmpp_queue->next;
free(xmpp_queue);
xmpp_queue = xptr;
purged_something = 1;
}
}
} while(purged_something);
end_critical_section(S_XMPP_QUEUE);
/* Create a new event */
new_event = (struct xmpp_event *) malloc(sizeof(struct xmpp_event));
new_event->next = NULL;
new_event->event_time = time(NULL);
new_event->event_seq = ++queue_event_seq;
new_event->event_type = event_type;
new_event->session_which_generated_this_event = CC->cs_pid;
safestrncpy(new_event->event_jid, email_addr, sizeof new_event->event_jid);
/* Add it to the list */
begin_critical_section(S_XMPP_QUEUE);
if (xmpp_queue == NULL) {
xmpp_queue = new_event;
}
else {
for (xptr = xmpp_queue; xptr != NULL; xptr = xptr->next) {
if (xptr->next == NULL) {
last = xptr;
}
}
last->next = new_event;
}
end_critical_section(S_XMPP_QUEUE);
/* Tell the sessions that something is happening */
begin_critical_section(S_SESSION_TABLE);
for (cptr = ContextList; cptr != NULL; cptr = cptr->next) {
if ((cptr->logged_in) && (cptr->h_async_function == xmpp_async_loop)) {
set_async_waiting(cptr);
}
}
end_critical_section(S_SESSION_TABLE);
}
/*
* Are we interested in anything from the queue? (Called in async loop)
*/
void xmpp_process_events(void) {
struct xmpp_event *xptr = NULL;
int highest_event = 0;
for (xptr=xmpp_queue; xptr!=NULL; xptr=xptr->next) {
if (xptr->event_seq > XMPP->last_event_processed) {
switch(xptr->event_type) {
case XMPP_EVT_LOGIN:
case XMPP_EVT_LOGOUT:
if (xptr->session_which_generated_this_event != CC->cs_pid) {
xmpp_presence_notify(xptr->event_jid, xptr->event_type);
}
break;
}
if (xptr->event_seq > highest_event) {
highest_event = xptr->event_seq;
}
}
}
XMPP->last_event_processed = highest_event;
}
void xmpp_cleanup_events(void)
{
struct xmpp_event *ptr, *ptr2;
begin_critical_section(S_XMPP_QUEUE);
ptr = xmpp_queue;
xmpp_queue = NULL;
while (ptr != NULL) {
ptr2 = ptr->next;
free(ptr);
ptr = ptr2;
}
end_critical_section(S_XMPP_QUEUE);
}
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